From the outset, let me say that "Structured Text" is probably a bit
of a misnomer. It's more like "Relaxed Text" that uses certain
consistent patterns. These patterns are interpreted by a HTML
converter to produce "Very Structured Text" that can be used by a web
browser.

The most basic pattern recognised is a paragraph (quickref).
That's a chunk of text that is separated by blank lines (one is
enough). Paragraphs must have the same indentation -- that is, line
up at their left edge. Paragraphs that start indented will result in
indented quote paragraphs. For example:

This is a paragraph. It's quite
short.
This paragraph will result in an indented block of
text, typically used for quoting other text.
This is another one.

Results in:

This is a paragraph. It's quite
short.

This paragraph will result in an indented block of
text, typically used for quoting other text.

Inside paragraphs and other bodies of text, you may additionally mark
text for italics with "*italics*" or bold with
"**bold**".

If you want something to appear as a fixed-space literal, use
"``doubleback-quotes``". Note that no further fiddling is done
inside the double back-quotes -- so asterisks "*" etc. are left
alone.

If you find that you want to use one of the "special" characters in
text, it will generally be OK -- reStructuredText is pretty smart.
For example, this * asterisk is handled just fine. If you actually
want text *surrounded by asterisks* to not be italicised, then
you need to indicate that the asterisk is not special. You do this by
placing a backslash just before it, like so "\*" (quickref), or
by enclosing it in double back-quotes (inline literals), like this:

Lists of items come in three main flavours: enumerated,
bulleted and definitions. In all list cases, you may have as
many paragraphs, sublists, etc. as you want, as long as the left-hand
side of the paragraph or whatever aligns with the first line of text
in the list item.

Lists must always start a new paragraph -- that is, they must appear
after a blank line.

Start a line off with a number or letter followed by a period ".",
right bracket ")" or surrounded by brackets "( )" -- whatever you're
comfortable with. All of the following forms are recognised:

1. numbers
A. upper-case letters
and it goes over many lines
with two paragraphs and all!
a. lower-case letters
3. with a sub-list starting at a different number
4. make sure the numbers are in the correct sequence though!
I. upper-case roman numerals
i. lower-case roman numerals
(1) numbers again
1) and again

Results in (note: the different enumerated list styles are not
always supported by every web browser, so you may not get the full
effect here):

Unlike the other two, the definition lists consist of a term, and
the definition of that term. The format of a definition list is:

what
Definition lists associate a term with a definition.
*how*
The term is a one-line phrase, and the definition is one or more
paragraphs or body elements, indented relative to the term.
Blank lines are not allowed between term and definition.

Results in:

what

Definition lists associate a term with a definition.

how

The term is a one-line phrase, and the definition is one or more
paragraphs or body elements, indented relative to the term.
Blank lines are not allowed between term and definition.

To just include a chunk of preformatted, never-to-be-fiddled-with
text, finish the prior paragraph with "::". The preformatted
block is finished when the text falls back to the same indentation
level as a paragraph prior to the preformatted block. For example:

An example::
Whitespace, newlines, blank lines, and all kinds of markup
(like *this* or \this) is preserved by literal blocks.
Lookie here, I've dropped an indentation level
(but not far enough)
no more example

To break longer text up into sections, you use section headers.
These are a single line of text (one or more words) with adornment: an
underline alone, or an overline and an overline together, in dashes
"-----", equals "======", tildes "~~~~~~" or any of the
non-alphanumeric characters =-`:'"~^_*+#<> that you
feel comfortable with. An underline-only adornment is distinct from
an overline-and-underline adornment using the same character. The
underline/overline must be at least as long as the title text. Be
consistent, since all sections marked with the same adornment style
are deemed to be at the same level:

(Pseudo-XML uses indentation for nesting and has no end-tags. It's
not possible to show actual processed output, as in the other
examples, because sections cannot exist inside block quotes. For a
concrete example, compare the section structure of this document's
source text and processed output.)

Note that section headers are available as link targets, just using
their name. To link to the Lists heading, I write "Lists_". If
the heading has a space in it like text styles, we need to quote
the heading "`textstyles`_".

To indicate the document title, use a unique adornment style at the
beginning of the document. To indicate the document subtitle, use
another unique adornment style immediately after the document title.
For example:

Note that "Document Title" and "Section Title" both use equals signs,
but are distict and unrelated styles. The text of
overline-and-underlined titles (but not underlined-only) may be inset
for aesthetics.

The images/biohazard.png part indicates the filename of the image
you wish to appear in the document. There's no restriction placed on
the image (format, size etc). If the image is to appear in HTML and
you wish to supply additional information, you may: